以上来源于: WordNet
The protolith of marble is limestone.
大理岩的原岩为灰岩。
The age of the protolith of the Hong′an Group in Hubei has been a controversial issue.
湖北红安群的原岩形成时代一直是个有争议的问题。
Protolith restoration, theoretical analysis for the reactions involved in the process of metamorphism, and calculations all support the above conclusion.
原岩恢复以及对变质作用过程中可能发生的变质反应的理论探讨和原始沉积物理想组分计算的结果都支持上述结论。
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